Temperature Changes in Light Experiment

In this video tutorial, the instructor demonstrates an experiment using a gooseneck lamp to simulate sunlight on a petri dish of water and sand. Initial temperatures are recorded, and the lamp is turned on for 10 minutes to observe temperature changes. Afterward, the lamp is turned off, and temperatures are recorded for another 10 minutes in the dark. The video concludes with a comparison of temperature changes in both light and dark conditions, encouraging students to analyze the data provided.

What does the gooseneck lamp represent in the experiment setup?

• The sun

• A planet

• The moon

• A star

What were the initial temperatures of the sand and water?

• Sand: 25°C, Water: 20°C

• Sand: 20°C, Water: 19°C

• Sand: 22°C, Water: 21°C

• Sand: 18°C, Water: 17°C

How often was the temperature recorded during the light period?

• Every 10 minutes

• Every 5 minutes

• Every 2 minutes

• Every minute

What was the temperature of the sand after 10 minutes with the light on?

• 32°C

• 30°C

• 28°C

• 25°C

What was the temperature of the water after 10 minutes with the light on?

• 28°C

• 26°C

• 24°C

• 22°C

What action was taken after the first 10 minutes of the experiment?

• Increased the light intensity

• Turned off the light

• Added more water

• Stirred the sand

What was the temperature of the sand after the dark period?

• 20°C

• 21°C

• 23°C

• 25°C

What was the temperature of the water after the dark period?

• 21°C

• 22.5°C

• 24°C

• 20°C

What should students consider about the temperature changes in the experiment?

• The differences in temperature changes in light and dark

• The initial temperature of the water

• The size of the petri dishes

• The color of the sand

What is provided at the end of the experiment for further analysis?

• A quiz

• A summary report

• A complete data table

• A video tutorial